94 GHz integrated monopulse antennas

Author

Ling, C.C. ; Rebeiz, G.M.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA

fYear

1991

fDate

24-28 June 1991

Firstpage

987

Abstract

A monolithic direction-finding monopulse antenna for applications at 94 GHz has been designed. The structure consists of a single-dipole suspended in one plane of an integrated horn cavity to obtain the sum pattern, and an anti-parallel pair of dipoles suspended in a different plane of the same horn cavity to achieve the difference pattern. The resonant input impedances of the sum and difference antennas were measured using a microwave model. The resonant input impedances are 53 Omega and 43 Omega , respectively. with a bandwidth +or-8% of the center frequency for a voltage standing wave ratio of 2. Microwave patterns of each antenna were measured at 3.3 GHz, and the difference antenna produced a sharp null below -25 dB across at +or-10% bandwidth.<>

Keywords

antenna feeders; antenna radiation patterns; dipole antennas; electric impedance; microwave antennas; radar antennas; 3.3 GHz; 94 GHz; EHF; SHF; VSWR; anti-parallel dipole pair; center frequency; difference pattern; integrated horn cavity; microwave model; monolithic direction-finding monopulse antenna; radar antennas; resonant input impedances; sum pattern; voltage standing wave ratio; Antenna measurements; Bandwidth; Dipole antennas; Directive antennas; Frequency; Impedance measurement; Microwave antennas; Microwave measurements; Navigation; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1991. AP-S. Digest

Conference_Location

London, Ontario, Canada

Print_ISBN

0-7803-0144-7

Type

conf

DOI

10.1109/APS.1991.175010

Filename

175010